/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:04:15,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:04:15,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:04:15,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:04:15,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:04:15,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:04:15,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:04:15,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:04:15,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:04:15,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:04:15,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:04:15,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:04:15,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:04:15,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:04:15,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:04:15,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:04:15,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:04:15,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:04:15,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:04:15,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:04:15,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:04:15,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:04:15,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:04:15,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:04:15,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:04:15,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:04:15,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:04:15,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:04:15,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:04:15,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:04:15,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:04:15,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:04:15,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:04:15,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:04:15,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:04:15,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:04:15,671 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 23:04:15,693 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:04:15,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:04:15,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:04:15,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:04:15,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:04:15,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:04:15,695 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:04:15,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:04:15,696 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:04:15,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:04:15,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:04:15,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:04:15,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:04:15,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:04:15,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:04:15,697 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:04:15,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:04:15,698 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:04:15,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:04:15,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:04:15,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:04:15,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:04:15,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:04:15,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:04:15,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:04:15,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:04:15,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:04:15,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:04:15,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:04:15,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:04:15,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:04:15,700 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 23:04:15,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:04:15,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:04:15,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:04:15,922 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:04:15,924 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:04:15,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-01-27 23:04:17,015 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:04:17,272 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:04:17,272 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2023-01-27 23:04:17,279 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ece5ff4ca/b080a93649354920ac6bf3572191aa55/FLAGcdeb7516d [2023-01-27 23:04:17,290 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ece5ff4ca/b080a93649354920ac6bf3572191aa55 [2023-01-27 23:04:17,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:04:17,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:04:17,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:04:17,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:04:17,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:04:17,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7181cf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17, skipping insertion in model container [2023-01-27 23:04:17,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:04:17,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:04:17,438 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2023-01-27 23:04:17,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:04:17,451 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:04:17,472 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c[3907,3920] [2023-01-27 23:04:17,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:04:17,481 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:04:17,481 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:04:17,486 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:04:17,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17 WrapperNode [2023-01-27 23:04:17,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:04:17,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:04:17,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:04:17,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:04:17,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,517 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192 [2023-01-27 23:04:17,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:04:17,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:04:17,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:04:17,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:04:17,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:04:17,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:04:17,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:04:17,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:04:17,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (1/1) ... [2023-01-27 23:04:17,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:04:17,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:17,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 23:04:17,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 23:04:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:04:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:04:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:04:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:04:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:04:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 23:04:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 23:04:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 23:04:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 23:04:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:04:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:04:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:04:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 23:04:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 23:04:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:04:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:04:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:04:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:04:17,597 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:04:17,695 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:04:17,697 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:04:17,892 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:04:17,968 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:04:17,968 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 23:04:17,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:04:17 BoogieIcfgContainer [2023-01-27 23:04:17,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:04:17,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:04:17,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:04:17,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:04:17,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:04:17" (1/3) ... [2023-01-27 23:04:17,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44543327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:04:17, skipping insertion in model container [2023-01-27 23:04:17,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:17" (2/3) ... [2023-01-27 23:04:17,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44543327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:04:17, skipping insertion in model container [2023-01-27 23:04:17,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:04:17" (3/3) ... [2023-01-27 23:04:17,988 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-01-27 23:04:18,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:04:18,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:04:18,007 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:04:18,130 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 23:04:18,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 302 flow [2023-01-27 23:04:18,255 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2023-01-27 23:04:18,255 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 23:04:18,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 2/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-01-27 23:04:18,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 302 flow [2023-01-27 23:04:18,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 119 transitions, 262 flow [2023-01-27 23:04:18,271 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:04:18,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 119 transitions, 262 flow [2023-01-27 23:04:18,280 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 119 transitions, 262 flow [2023-01-27 23:04:18,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 119 transitions, 262 flow [2023-01-27 23:04:18,313 INFO L130 PetriNetUnfolder]: 2/119 cut-off events. [2023-01-27 23:04:18,313 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 23:04:18,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 2/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-01-27 23:04:18,316 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-27 23:04:21,977 INFO L134 LiptonReduction]: Checked pairs total: 11399 [2023-01-27 23:04:21,978 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-01-27 23:04:21,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:04:21,997 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2492f23c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:04:21,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 23:04:22,007 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2023-01-27 23:04:22,007 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 23:04:22,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:22,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:22,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:04:22,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:22,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2048807285, now seen corresponding path program 1 times [2023-01-27 23:04:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:22,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133487726] [2023-01-27 23:04:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:22,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:22,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133487726] [2023-01-27 23:04:22,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133487726] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:22,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:22,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:04:22,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896060585] [2023-01-27 23:04:22,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:22,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:04:22,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:22,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:04:22,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:04:22,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-27 23:04:22,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:22,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:22,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-27 23:04:22,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:22,949 INFO L130 PetriNetUnfolder]: 585/1061 cut-off events. [2023-01-27 23:04:22,950 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2023-01-27 23:04:22,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 1061 events. 585/1061 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5763 event pairs, 180 based on Foata normal form. 26/1059 useless extension candidates. Maximal degree in co-relation 1491. Up to 756 conditions per place. [2023-01-27 23:04:22,960 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-01-27 23:04:22,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 200 flow [2023-01-27 23:04:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:04:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:04:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-01-27 23:04:22,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-01-27 23:04:22,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-01-27 23:04:22,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-01-27 23:04:22,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:22,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-01-27 23:04:22,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,005 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 106 flow. Second operand 3 states and 390 transitions. [2023-01-27 23:04:23,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 200 flow [2023-01-27 23:04:23,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 23:04:23,010 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 98 flow [2023-01-27 23:04:23,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-01-27 23:04:23,017 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-01-27 23:04:23,018 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 98 flow [2023-01-27 23:04:23,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:23,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:23,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:04:23,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:04:23,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1246737449, now seen corresponding path program 2 times [2023-01-27 23:04:23,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:23,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208382177] [2023-01-27 23:04:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:23,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:23,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208382177] [2023-01-27 23:04:23,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208382177] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:23,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:23,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:04:23,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602020038] [2023-01-27 23:04:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:23,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:04:23,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:23,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:04:23,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:04:23,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-27 23:04:23,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:23,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-27 23:04:23,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:23,450 INFO L130 PetriNetUnfolder]: 573/989 cut-off events. [2023-01-27 23:04:23,450 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-27 23:04:23,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 989 events. 573/989 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5242 event pairs, 440 based on Foata normal form. 21/986 useless extension candidates. Maximal degree in co-relation 1738. Up to 836 conditions per place. [2023-01-27 23:04:23,457 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-01-27 23:04:23,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 190 flow [2023-01-27 23:04:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:04:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:04:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-01-27 23:04:23,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-01-27 23:04:23,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-01-27 23:04:23,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-01-27 23:04:23,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:23,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-01-27 23:04:23,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,464 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 98 flow. Second operand 3 states and 390 transitions. [2023-01-27 23:04:23,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 190 flow [2023-01-27 23:04:23,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:04:23,467 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 102 flow [2023-01-27 23:04:23,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-01-27 23:04:23,468 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-01-27 23:04:23,468 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 102 flow [2023-01-27 23:04:23,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:23,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:23,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:04:23,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:04:23,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash -794314321, now seen corresponding path program 3 times [2023-01-27 23:04:23,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:23,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988479531] [2023-01-27 23:04:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:23,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:23,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:23,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988479531] [2023-01-27 23:04:23,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988479531] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:23,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:23,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:04:23,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921217204] [2023-01-27 23:04:23,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:23,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:04:23,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:23,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:04:23,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:04:23,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-27 23:04:23,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:23,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-27 23:04:23,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:23,877 INFO L130 PetriNetUnfolder]: 623/1095 cut-off events. [2023-01-27 23:04:23,877 INFO L131 PetriNetUnfolder]: For 171/190 co-relation queries the response was YES. [2023-01-27 23:04:23,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 1095 events. 623/1095 cut-off events. For 171/190 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5800 event pairs, 176 based on Foata normal form. 17/1068 useless extension candidates. Maximal degree in co-relation 2220. Up to 816 conditions per place. [2023-01-27 23:04:23,885 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-01-27 23:04:23,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 203 flow [2023-01-27 23:04:23,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:04:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:04:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-01-27 23:04:23,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-01-27 23:04:23,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-01-27 23:04:23,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-01-27 23:04:23,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:23,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-01-27 23:04:23,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,890 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 102 flow. Second operand 3 states and 392 transitions. [2023-01-27 23:04:23,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 203 flow [2023-01-27 23:04:23,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:04:23,891 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 106 flow [2023-01-27 23:04:23,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-01-27 23:04:23,892 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-01-27 23:04:23,892 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 106 flow [2023-01-27 23:04:23,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:23,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:23,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:04:23,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:04:23,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1839241021, now seen corresponding path program 4 times [2023-01-27 23:04:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273336816] [2023-01-27 23:04:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:26,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:26,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273336816] [2023-01-27 23:04:26,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273336816] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:26,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:26,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:04:26,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113846908] [2023-01-27 23:04:26,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:26,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:04:26,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:26,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:04:26,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:04:26,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-27 23:04:26,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 106 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:26,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:26,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-27 23:04:26,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:28,748 INFO L130 PetriNetUnfolder]: 8470/12724 cut-off events. [2023-01-27 23:04:28,748 INFO L131 PetriNetUnfolder]: For 1747/1747 co-relation queries the response was YES. [2023-01-27 23:04:28,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26988 conditions, 12724 events. 8470/12724 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 73112 event pairs, 1567 based on Foata normal form. 1/12717 useless extension candidates. Maximal degree in co-relation 10773. Up to 3244 conditions per place. [2023-01-27 23:04:28,822 INFO L137 encePairwiseOnDemand]: 207/221 looper letters, 224 selfloop transitions, 16 changer transitions 16/260 dead transitions. [2023-01-27 23:04:28,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 260 transitions, 1146 flow [2023-01-27 23:04:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 23:04:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 23:04:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1607 transitions. [2023-01-27 23:04:28,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847662141779789 [2023-01-27 23:04:28,832 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1607 transitions. [2023-01-27 23:04:28,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1607 transitions. [2023-01-27 23:04:28,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:28,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1607 transitions. [2023-01-27 23:04:28,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 107.13333333333334) internal successors, (1607), 15 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:28,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:28,843 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 221.0) internal successors, (3536), 16 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:28,843 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 106 flow. Second operand 15 states and 1607 transitions. [2023-01-27 23:04:28,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 260 transitions, 1146 flow [2023-01-27 23:04:28,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 260 transitions, 1142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:04:28,850 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 221 flow [2023-01-27 23:04:28,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=221, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-01-27 23:04:28,851 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2023-01-27 23:04:28,851 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 221 flow [2023-01-27 23:04:28,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:28,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:28,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:28,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:04:28,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:04:28,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:28,853 INFO L85 PathProgramCache]: Analyzing trace with hash 491926227, now seen corresponding path program 5 times [2023-01-27 23:04:28,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:28,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445814254] [2023-01-27 23:04:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:28,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:29,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:29,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445814254] [2023-01-27 23:04:29,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445814254] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:29,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:29,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:04:29,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467716646] [2023-01-27 23:04:29,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:29,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:04:29,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:29,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:04:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:04:29,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 221 [2023-01-27 23:04:29,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:29,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:29,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 221 [2023-01-27 23:04:29,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:29,334 INFO L130 PetriNetUnfolder]: 1445/2509 cut-off events. [2023-01-27 23:04:29,334 INFO L131 PetriNetUnfolder]: For 2967/3064 co-relation queries the response was YES. [2023-01-27 23:04:29,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7306 conditions, 2509 events. 1445/2509 cut-off events. For 2967/3064 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 16297 event pairs, 1093 based on Foata normal form. 59/2447 useless extension candidates. Maximal degree in co-relation 7272. Up to 2221 conditions per place. [2023-01-27 23:04:29,349 INFO L137 encePairwiseOnDemand]: 218/221 looper letters, 40 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-01-27 23:04:29,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 322 flow [2023-01-27 23:04:29,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:04:29,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:04:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-01-27 23:04:29,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912518853695324 [2023-01-27 23:04:29,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-01-27 23:04:29,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-01-27 23:04:29,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:29,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-01-27 23:04:29,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:29,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:29,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:29,354 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 221 flow. Second operand 3 states and 392 transitions. [2023-01-27 23:04:29,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 322 flow [2023-01-27 23:04:29,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 312 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-27 23:04:29,372 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 201 flow [2023-01-27 23:04:29,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-01-27 23:04:29,374 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-01-27 23:04:29,374 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 201 flow [2023-01-27 23:04:29,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:29,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:29,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:29,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:04:29,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:04:29,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2048283425, now seen corresponding path program 6 times [2023-01-27 23:04:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:29,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589471543] [2023-01-27 23:04:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:29,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:31,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589471543] [2023-01-27 23:04:31,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589471543] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:31,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:31,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:04:31,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490204321] [2023-01-27 23:04:31,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:31,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:04:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:04:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:04:31,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-27 23:04:31,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 201 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:31,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:31,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-27 23:04:31,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:33,999 INFO L130 PetriNetUnfolder]: 12797/19577 cut-off events. [2023-01-27 23:04:34,000 INFO L131 PetriNetUnfolder]: For 14911/14911 co-relation queries the response was YES. [2023-01-27 23:04:34,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55233 conditions, 19577 events. 12797/19577 cut-off events. For 14911/14911 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 122873 event pairs, 2369 based on Foata normal form. 1/19578 useless extension candidates. Maximal degree in co-relation 41818. Up to 5867 conditions per place. [2023-01-27 23:04:34,105 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 208 selfloop transitions, 23 changer transitions 9/244 dead transitions. [2023-01-27 23:04:34,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 244 transitions, 1349 flow [2023-01-27 23:04:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 23:04:34,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 23:04:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1476 transitions. [2023-01-27 23:04:34,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4770523594053006 [2023-01-27 23:04:34,109 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1476 transitions. [2023-01-27 23:04:34,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1476 transitions. [2023-01-27 23:04:34,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:34,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1476 transitions. [2023-01-27 23:04:34,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 105.42857142857143) internal successors, (1476), 14 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:34,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:34,117 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:34,117 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 201 flow. Second operand 14 states and 1476 transitions. [2023-01-27 23:04:34,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 244 transitions, 1349 flow [2023-01-27 23:04:34,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 244 transitions, 1345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:04:34,244 INFO L231 Difference]: Finished difference. Result has 92 places, 70 transitions, 412 flow [2023-01-27 23:04:34,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=412, PETRI_PLACES=92, PETRI_TRANSITIONS=70} [2023-01-27 23:04:34,246 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2023-01-27 23:04:34,246 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 70 transitions, 412 flow [2023-01-27 23:04:34,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:34,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:34,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:34,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:04:34,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:04:34,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash 516308761, now seen corresponding path program 7 times [2023-01-27 23:04:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409896729] [2023-01-27 23:04:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:36,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:36,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409896729] [2023-01-27 23:04:36,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409896729] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:36,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:36,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:04:36,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295235132] [2023-01-27 23:04:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:36,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:04:36,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:36,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:04:36,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:04:36,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-27 23:04:36,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 70 transitions, 412 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:36,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:36,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-27 23:04:36,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:40,582 INFO L130 PetriNetUnfolder]: 22421/34788 cut-off events. [2023-01-27 23:04:40,583 INFO L131 PetriNetUnfolder]: For 73311/73311 co-relation queries the response was YES. [2023-01-27 23:04:40,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120405 conditions, 34788 events. 22421/34788 cut-off events. For 73311/73311 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 246472 event pairs, 5189 based on Foata normal form. 1/34789 useless extension candidates. Maximal degree in co-relation 120145. Up to 11164 conditions per place. [2023-01-27 23:04:40,793 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 275 selfloop transitions, 36 changer transitions 9/324 dead transitions. [2023-01-27 23:04:40,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 324 transitions, 2296 flow [2023-01-27 23:04:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 23:04:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 23:04:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1496 transitions. [2023-01-27 23:04:40,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2023-01-27 23:04:40,801 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1496 transitions. [2023-01-27 23:04:40,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1496 transitions. [2023-01-27 23:04:40,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:40,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1496 transitions. [2023-01-27 23:04:40,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.85714285714286) internal successors, (1496), 14 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:40,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:40,811 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:40,811 INFO L175 Difference]: Start difference. First operand has 92 places, 70 transitions, 412 flow. Second operand 14 states and 1496 transitions. [2023-01-27 23:04:40,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 324 transitions, 2296 flow [2023-01-27 23:04:42,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 324 transitions, 2242 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-01-27 23:04:42,053 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 798 flow [2023-01-27 23:04:42,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=798, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2023-01-27 23:04:42,053 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2023-01-27 23:04:42,054 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 798 flow [2023-01-27 23:04:42,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:42,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:42,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:42,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:04:42,055 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:04:42,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:42,055 INFO L85 PathProgramCache]: Analyzing trace with hash 933027707, now seen corresponding path program 8 times [2023-01-27 23:04:42,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:42,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902021820] [2023-01-27 23:04:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:42,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:43,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:43,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902021820] [2023-01-27 23:04:43,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902021820] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:43,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:43,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:04:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40076921] [2023-01-27 23:04:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:43,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:04:43,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:43,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:04:43,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:04:43,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-27 23:04:43,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 798 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:43,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:43,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-27 23:04:43,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:50,483 INFO L130 PetriNetUnfolder]: 35953/56513 cut-off events. [2023-01-27 23:04:50,483 INFO L131 PetriNetUnfolder]: For 243293/243293 co-relation queries the response was YES. [2023-01-27 23:04:50,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233532 conditions, 56513 events. 35953/56513 cut-off events. For 243293/243293 co-relation queries the response was YES. Maximal size of possible extension queue 2017. Compared 441665 event pairs, 8935 based on Foata normal form. 1/56514 useless extension candidates. Maximal degree in co-relation 232967. Up to 17367 conditions per place. [2023-01-27 23:04:50,917 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 322 selfloop transitions, 61 changer transitions 9/396 dead transitions. [2023-01-27 23:04:50,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 396 transitions, 3586 flow [2023-01-27 23:04:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 23:04:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 23:04:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1499 transitions. [2023-01-27 23:04:50,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48448610213316096 [2023-01-27 23:04:50,922 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1499 transitions. [2023-01-27 23:04:50,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1499 transitions. [2023-01-27 23:04:50,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:50,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1499 transitions. [2023-01-27 23:04:50,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.07142857142857) internal successors, (1499), 14 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:50,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:50,930 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:50,930 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 798 flow. Second operand 14 states and 1499 transitions. [2023-01-27 23:04:50,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 396 transitions, 3586 flow [2023-01-27 23:04:55,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 396 transitions, 3494 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-01-27 23:04:55,488 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 1629 flow [2023-01-27 23:04:55,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1629, PETRI_PLACES=135, PETRI_TRANSITIONS=143} [2023-01-27 23:04:55,489 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2023-01-27 23:04:55,489 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 1629 flow [2023-01-27 23:04:55,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:55,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:55,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:55,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 23:04:55,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:04:55,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:55,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1142875245, now seen corresponding path program 9 times [2023-01-27 23:04:55,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:55,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204518811] [2023-01-27 23:04:55,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:55,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:56,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:56,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204518811] [2023-01-27 23:04:56,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204518811] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:56,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:56,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:04:56,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115619925] [2023-01-27 23:04:56,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:56,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:04:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:56,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:04:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:04:56,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-27 23:04:56,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 1629 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:56,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:56,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-27 23:04:56,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:05:05,922 INFO L130 PetriNetUnfolder]: 45151/72741 cut-off events. [2023-01-27 23:05:05,922 INFO L131 PetriNetUnfolder]: For 504152/504152 co-relation queries the response was YES. [2023-01-27 23:05:06,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343217 conditions, 72741 events. 45151/72741 cut-off events. For 504152/504152 co-relation queries the response was YES. Maximal size of possible extension queue 2688. Compared 612510 event pairs, 11539 based on Foata normal form. 1/72742 useless extension candidates. Maximal degree in co-relation 342215. Up to 17698 conditions per place. [2023-01-27 23:05:06,578 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 357 selfloop transitions, 85 changer transitions 10/456 dead transitions. [2023-01-27 23:05:06,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 456 transitions, 5065 flow [2023-01-27 23:05:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 23:05:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 23:05:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1493 transitions. [2023-01-27 23:05:06,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825468648998061 [2023-01-27 23:05:06,583 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1493 transitions. [2023-01-27 23:05:06,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1493 transitions. [2023-01-27 23:05:06,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:05:06,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1493 transitions. [2023-01-27 23:05:06,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.64285714285714) internal successors, (1493), 14 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:06,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:06,591 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:06,591 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 1629 flow. Second operand 14 states and 1493 transitions. [2023-01-27 23:05:06,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 456 transitions, 5065 flow [2023-01-27 23:05:15,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 456 transitions, 4969 flow, removed 48 selfloop flow, removed 1 redundant places. [2023-01-27 23:05:15,567 INFO L231 Difference]: Finished difference. Result has 158 places, 188 transitions, 2619 flow [2023-01-27 23:05:15,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2619, PETRI_PLACES=158, PETRI_TRANSITIONS=188} [2023-01-27 23:05:15,568 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2023-01-27 23:05:15,568 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 188 transitions, 2619 flow [2023-01-27 23:05:15,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:15,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:05:15,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:05:15,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 23:05:15,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:05:15,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:05:15,569 INFO L85 PathProgramCache]: Analyzing trace with hash -307061275, now seen corresponding path program 10 times [2023-01-27 23:05:15,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:05:15,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516257056] [2023-01-27 23:05:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:05:15,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:05:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:05:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:05:16,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:05:16,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516257056] [2023-01-27 23:05:16,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516257056] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:05:16,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:05:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:05:16,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817174950] [2023-01-27 23:05:16,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:05:16,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:05:16,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:05:16,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:05:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:05:16,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-27 23:05:16,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 188 transitions, 2619 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:16,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:05:16,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-27 23:05:16,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:05:32,053 INFO L130 PetriNetUnfolder]: 63494/105675 cut-off events. [2023-01-27 23:05:32,054 INFO L131 PetriNetUnfolder]: For 1189542/1189542 co-relation queries the response was YES. [2023-01-27 23:05:32,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571337 conditions, 105675 events. 63494/105675 cut-off events. For 1189542/1189542 co-relation queries the response was YES. Maximal size of possible extension queue 4114. Compared 986921 event pairs, 18359 based on Foata normal form. 1/105668 useless extension candidates. Maximal degree in co-relation 569249. Up to 29841 conditions per place. [2023-01-27 23:05:33,182 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 545 selfloop transitions, 99 changer transitions 11/659 dead transitions. [2023-01-27 23:05:33,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 659 transitions, 9954 flow [2023-01-27 23:05:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 23:05:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 23:05:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1492 transitions. [2023-01-27 23:05:33,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48222365869424694 [2023-01-27 23:05:33,187 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1492 transitions. [2023-01-27 23:05:33,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1492 transitions. [2023-01-27 23:05:33,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:05:33,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1492 transitions. [2023-01-27 23:05:33,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.57142857142857) internal successors, (1492), 14 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:33,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:33,196 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:33,196 INFO L175 Difference]: Start difference. First operand has 158 places, 188 transitions, 2619 flow. Second operand 14 states and 1492 transitions. [2023-01-27 23:05:33,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 659 transitions, 9954 flow [2023-01-27 23:05:57,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 659 transitions, 9699 flow, removed 119 selfloop flow, removed 2 redundant places. [2023-01-27 23:05:57,048 INFO L231 Difference]: Finished difference. Result has 180 places, 264 transitions, 4291 flow [2023-01-27 23:05:57,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4291, PETRI_PLACES=180, PETRI_TRANSITIONS=264} [2023-01-27 23:05:57,049 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2023-01-27 23:05:57,049 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 264 transitions, 4291 flow [2023-01-27 23:05:57,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:57,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:05:57,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:05:57,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 23:05:57,049 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:05:57,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:05:57,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1994198369, now seen corresponding path program 11 times [2023-01-27 23:05:57,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:05:57,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713986281] [2023-01-27 23:05:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:05:57,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:05:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:05:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:05:58,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:05:58,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713986281] [2023-01-27 23:05:58,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713986281] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:05:58,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:05:58,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:05:58,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100705613] [2023-01-27 23:05:58,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:05:58,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:05:58,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:05:58,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:05:58,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:05:58,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-27 23:05:58,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 264 transitions, 4291 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:05:58,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:05:58,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-27 23:05:58,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:06:19,245 INFO L130 PetriNetUnfolder]: 75049/128442 cut-off events. [2023-01-27 23:06:19,245 INFO L131 PetriNetUnfolder]: For 1853392/1853392 co-relation queries the response was YES. [2023-01-27 23:06:20,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751359 conditions, 128442 events. 75049/128442 cut-off events. For 1853392/1853392 co-relation queries the response was YES. Maximal size of possible extension queue 5216. Compared 1274523 event pairs, 23957 based on Foata normal form. 1/128443 useless extension candidates. Maximal degree in co-relation 748393. Up to 50069 conditions per place. [2023-01-27 23:06:20,822 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 495 selfloop transitions, 133 changer transitions 9/641 dead transitions. [2023-01-27 23:06:20,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 641 transitions, 10054 flow [2023-01-27 23:06:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 23:06:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 23:06:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1485 transitions. [2023-01-27 23:06:20,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799612152553329 [2023-01-27 23:06:20,826 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1485 transitions. [2023-01-27 23:06:20,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1485 transitions. [2023-01-27 23:06:20,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:06:20,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1485 transitions. [2023-01-27 23:06:20,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.07142857142857) internal successors, (1485), 14 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:06:20,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:06:20,835 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:06:20,835 INFO L175 Difference]: Start difference. First operand has 180 places, 264 transitions, 4291 flow. Second operand 14 states and 1485 transitions. [2023-01-27 23:06:20,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 641 transitions, 10054 flow [2023-01-27 23:07:05,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 641 transitions, 9696 flow, removed 170 selfloop flow, removed 3 redundant places. [2023-01-27 23:07:05,853 INFO L231 Difference]: Finished difference. Result has 201 places, 340 transitions, 6093 flow [2023-01-27 23:07:05,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=4189, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6093, PETRI_PLACES=201, PETRI_TRANSITIONS=340} [2023-01-27 23:07:05,853 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2023-01-27 23:07:05,853 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 340 transitions, 6093 flow [2023-01-27 23:07:05,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:07:05,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:07:05,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:07:05,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 23:07:05,854 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:07:05,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:07:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1945538019, now seen corresponding path program 12 times [2023-01-27 23:07:05,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:07:05,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723822782] [2023-01-27 23:07:05,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:07:05,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:07:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:07:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:07:06,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:07:06,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723822782] [2023-01-27 23:07:06,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723822782] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:07:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:07:06,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:07:06,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331157792] [2023-01-27 23:07:06,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:07:06,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:07:06,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:07:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:07:06,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:07:06,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-27 23:07:06,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 340 transitions, 6093 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:07:06,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:07:06,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-27 23:07:06,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:07:40,283 INFO L130 PetriNetUnfolder]: 92388/166651 cut-off events. [2023-01-27 23:07:40,284 INFO L131 PetriNetUnfolder]: For 2878832/2878832 co-relation queries the response was YES. [2023-01-27 23:07:42,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022179 conditions, 166651 events. 92388/166651 cut-off events. For 2878832/2878832 co-relation queries the response was YES. Maximal size of possible extension queue 7261. Compared 1831828 event pairs, 25395 based on Foata normal form. 1/166652 useless extension candidates. Maximal degree in co-relation 1021916. Up to 42656 conditions per place. [2023-01-27 23:07:43,245 INFO L137 encePairwiseOnDemand]: 208/221 looper letters, 792 selfloop transitions, 96 changer transitions 12/904 dead transitions. [2023-01-27 23:07:43,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 904 transitions, 16482 flow [2023-01-27 23:07:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 23:07:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 23:07:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1508 transitions. [2023-01-27 23:07:43,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2023-01-27 23:07:43,269 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1508 transitions. [2023-01-27 23:07:43,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1508 transitions. [2023-01-27 23:07:43,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:07:43,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1508 transitions. [2023-01-27 23:07:43,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.71428571428571) internal successors, (1508), 14 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:07:43,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:07:43,284 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 221.0) internal successors, (3315), 15 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:07:43,285 INFO L175 Difference]: Start difference. First operand has 201 places, 340 transitions, 6093 flow. Second operand 14 states and 1508 transitions. [2023-01-27 23:07:43,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 904 transitions, 16482 flow [2023-01-27 23:08:58,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 904 transitions, 15900 flow, removed 275 selfloop flow, removed 3 redundant places. [2023-01-27 23:08:58,793 INFO L231 Difference]: Finished difference. Result has 222 places, 404 transitions, 7415 flow [2023-01-27 23:08:58,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=5858, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7415, PETRI_PLACES=222, PETRI_TRANSITIONS=404} [2023-01-27 23:08:58,794 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2023-01-27 23:08:58,794 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 404 transitions, 7415 flow [2023-01-27 23:08:58,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:58,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:58,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:58,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 23:08:58,794 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:08:58,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1093714013, now seen corresponding path program 13 times [2023-01-27 23:08:58,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764524805] [2023-01-27 23:08:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:09:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:00,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:09:00,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764524805] [2023-01-27 23:09:00,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764524805] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:09:00,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:09:00,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:09:00,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802902550] [2023-01-27 23:09:00,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:09:00,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 23:09:00,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:09:00,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 23:09:00,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-01-27 23:09:00,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 221 [2023-01-27 23:09:00,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 404 transitions, 7415 flow. Second operand has 14 states, 14 states have (on average 92.64285714285714) internal successors, (1297), 14 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:00,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:09:00,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 221 [2023-01-27 23:09:00,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand